// change_block(x, y, ins, key, vel, pan, pit)
var xx, yy, ins, key, vel, pan, pit;
xx = argument0
yy = argument1
ins = argument2
key = argument3
vel = argument4
pan = argument5
pit = argument6

song_ins[xx, yy] = ins
song_key[xx, yy] = key
song_vel[xx, yy] = vel
song_pan[xx, yy] = pan
song_pit[xx, yy] = pit